“All creatures, whatever the degree of their perfection may be, are dependent upon an external source for their being and well-being.
God’s perfection, however, excludes such a possibility, as He has no need of anything. No one can add to or subtract anything from His being, neither can anyone increase or decrease His felicity.
His perfection consists in His self-sufficiency, His self-existence, and that He is the beginning— the first (Rev. 1:8). His all-sufficiency is within and for Himself, the אֵ֣ל שַׁדַּ֔י (El Shaddai), the All-sufficient One (Gen. 17:1).
‘Neither is He worshipped with men’s hands, as though He needed anything’ (Acts 17:25).
‘Is it any pleasure to the Almighty, that thou art righteous? Or is it gain to Him, that thou makest thy ways perfect?’ (Job 22:3).
‘My goodness extendeth not to Thee’ (Ps. 16:2).
Thus there is no common ground between the perfection of God and of creatures— except in name. That which is in man is contrary to the perfection of God, however, and thus the perfection of God is an incommunicable attribute of God.
The salvation of man consists in knowing, honoring, and serving God.
Such is our God, who not only is all-sufficient in Himself but who with His all-sufficiency can fill and saturate the soul to such an overflowing measure that it has need of nothing else but to have God as its portion.
The soul so favored is filled with such light, love, and happiness, that it desires nothing but this.
‘Whom have I in heaven but Thee? and there is none upon earth that I desire beside Thee’ (Ps. 73:25).””
–Wilhelmus à Brakel, The Christian’s Reasonable Service, Volume 1 (God, Man, and Christ), Ed. Joel Beeke, Trans. Bartel Elshout (Grand Rapids, MI: Reformation Heritage Books, 1700/1994), 1: 91.