2. Love must be acted to render a worship spiritual. Though God commanded love in the Old Testament, yet the manner of giving the law bespoke more of fear than love. The dispensation of the law was with fire, thunder, &c., proper to raise horror, and benumb the spirit; which effect it had upon the Israelites, when they desired that God would speak no more to them. Grace is the genius of the gospel, proper to excite the affection of love. The law was given by the “disposition of angels,” with signs to amaze; the gospel was ushered in with the “songs of angels,” composed of peace and good‑will, calculated to ravish the soul. Instead of the terrible voice of the law, “Do this and live,” the comfortable voice of the gospel is, “Grace, grace!” Upon this account the principle of the Old Testament was fear, and the worship often expressed by the fear of God. The principle of the New Testament is love. The Mount Sinai gendereth to bondage (Gal. iv. 44); Mount Sion, from whence the gospel or evangelical law goes forth, gendereth to liberty; and therefore the “spirit of bondage unto fear,” as the property of the law, is opposed to the state of adoption, the principle of love, as the property of the gospel (Rom. viii. 15); and therefore the worship of God under the gospel, or New Testament, is oftener expressed by love than fear, as proceeding from higher principles, and acting nobler passions. In this state we are to serve him without fear (Luke i. 74); without a bondage fear; not without a fear of unworthy treating him; with a “fear of his goodness” as it is prophesied of (Hos. ix. 5). Goodness is not the object of terror, but reverence; God, in the law, had more the garb of a judge; in the gospel, of a father; the name of a father is sweeter and bespeaks more of affection. As their services were with a feeling of the thunders of the law in their consciences, so is our worship to be with a sense of gospel grace in our spirits; spiritual worship is that, therefore, which is exercised with a spiritual and heavenly affection, proper to the gospel. The heart should be enlarged according to the liberty the gospel gives of drawing near to God as a father. As he gives us the nobler relation of children, we are to act the nobler qualities of children. Love should act according to its nature, which is desired of union; desire of a moral union by affections, as well as a mystical union by faith; as flame aspires to reach flame, and become one with it. In every act of worship we should endeavor to be united to God, and become one spirit with him. This grace doth spiritualize worship; in that one word, love, God hath wrapt up all the devotion he requires of us; it is the total sum of the first table, “Thou shalt love the Lord thy God:” it is to be acted in everything we do; but in worship our hearts should more solemnly rise up and acknowledge him amiable and lovely, since the law is stripped of its cursing power, and made sweet in the blood of the Redeemer. Love is a thing acceptable of itself, but nothing acceptable without it; the gifts of one man to another are spiritualized by it. We would not value a present without the affection of the donor; every man would lay claim to the love of others, though he would not to their possessions. Love is God’s right in every service, and the noblest thing we can bestow upon him in our adorations of him. God’s gifts to us are not so estimable without his love; nor our services valuable by him without the exercise of a choice affection. Hezekiah regarded not his deliverance without the love of the Deliverer; “In love to my soul thou hast delivered me” (Isa. xxxviii. 17). So doth God say, In love to my honor thou hast worshipped me: so that love must be acted, to render our worship spiritual.
3. A spiritual sensibleness of our own weakness is necessary to make our worship spiritual. Affections to God cannot be without relentings in ourselves. When the eye is spiritually fixed upon a spiritual God, the heart will mourn that the worship is no more spiritually suitable. The more we act love upon God, as amiable and gracious, the more we should exercise grief in ourselves, as we are vile and offending. Spiritual worship is a melting worship, as well as an elevating worship; it exalts God, and debaseth the creature. The Publican was more spiritual in his humble address to God, when the Pharisee was wholly carnal with his swelling language. A spiritual love in worship will make us grieve that we have given him so little, and could give him no more. It is a part of spiritual duty to bewail our carnality mixed with it; as we receive mercies spiritually, when we receive them with a sense of God’s goodness and our own vileness; in the same manner we render a spiritual worship.
4. Spiritual desires for God render the service spiritual; when the soul “follows hard after him” (Psalm lxiii. 8); pursues after God as a God of infinite and communicative goodness, with sighs and groans unutterable. A spiritual soul seems to be transformed into hunger and thirst, and becomes nothing but desire. A carnal worshipper is taken with the beauty and magnificence of the temple; a spiritual worshipper desires to see the glory of God in the sanctuary (Psalm lxiii. 2), he pants after God: as he came to worship, to find God, he boils up in desires for God, and is loth to go from it without God, “the living God” (Psalm xlii. 2). He would see the Urim and the Thummim; the unusual sparkling of the stones upon the high‑priest’s breast‑plate. That deserves not the title of spiritual worship, when the soul makes no longing inquiries: “Saw you him whom my soul loves?” A spiritual worship is when our desires are chiefly for God in the worship; as David desires to dwell in the house of the Lord; but his desire is not terminated there, but to behold the beauty of the Lord (Psalm xxvii. 4), and taste the ravishing sweetness of his presence. No doubt but Elijah’s desires for the enjoyment of God while he was mounting to heaven, were as fiery as the chariot wherein he was carried. Unutterable groans acted in worship are the fruit of the Spirit, and certainly render it a spiritual service (Rom. viii. 26). Strong appetites are agreeable to God, and prepare us to eat the fruit of worship. A spiritual Paul presseth forward to know Christ, and the power of his resurrection; and a spiritual worshipper actually aspires in every duty to know God, and the power of his grace. To desire worship as an end is carnal; to desire it as a means, and act desires in it for communion with God in it, is spiritual, and the fruit of a spiritual life.
5. Thankfulness and admiration are to be exercised in spiritual service. This is a worship of spirits; praise is the adoration of the blessed angels (Isa. vi. 3), and of glorified spirits (Rev. iv. 11): “Thou art worthy, O Lord, to receive glory and honor, and power;” and (Rev. v. 13, 14), they worship him ascribing “Blessing, honor, glory, and power to Him that sits upon the throne, and to the Lamb forever and ever.” Other acts of worship are confined to this life, and leave us as soon as we have set our foot in heaven; there, no notes but this of praise are warbled out; the power, wisdom, love, and grace in the dispensation of the gospel, seat themselves in the thoughts and tongues of blessed souls. Can a worship on earth be spiritual, that hath no mixture of an eternal heavenly