From Charles Spurgeon's The Treasury of David, on Psalm 110.
Verse 3. Thy people shall be willing. Willing to do what? They shall be willing while others are unwilling. The simple term "willing, "is very expressive. It denotes the beautiful condition of creatures who suffer themselves to be wrought upon, and moved, according to the will of God. They suffer God to work in them to will and to do. They are willing to die unto all sin, they are willing to crucify the old man, or self, in order that the new man, or Christ, may be formed in them. They are willing to be weaned from their own thoughts and purposes, that the thoughts and purposes of God may be fulfilled in them. They are willing to be transferred from nature's steps of human descent to God's steps of human ascent. Or, to abide by the simplicity of our text, God is Will, and they are "willing." God will beautify them with salvation, because there is nothing in them to hinder his working. They will be wise, they will be good, they will be lovely, they will be like God, for they are "willing"; and there proceeds from God a mighty spirit, the whole tendency of which is to make his creatures like himself. John Pulsford, in"Quiet Hours," 1857.
Pulsford was a prolific 19th century devotional writer; many of his books are available free online