Psalms 119:57
57The LORD is my portion. I promised to obey your words.
Wesley: Said—I have professed and owned it.
Listen here for God claimed as portion and a vow to keep his words—profession that aims at practice. The portion is the Lord himself; keeping follows from belonging to him under grace.
Calvin prefers: I am persuaded my best portion consists in keeping God’s law—compared with imaginary goods that captivate ambition. Another sound reading: God as portion ought to animate observance; if we rest in him alone, hearts are disposed to keep the law and renounce fleshly lusts.
Calling the LORD his portion dethrones every rival gain. Resolve to keep is bound to God as heritage, not to self-made piety.
Key contrast Both name the Lord as true portion and both join that claim to keeping his words. Arminians typically hear a sincere profession and vow grace enables—God owned, then words kept. Reformed readers hear Calvin’s stress that the best portion is keeping the law, or that God-as-portion itself disposes the heart to obey—satisfaction in God, not rival ambitions, animates observance.