Matthew Poole and continuators on Acts 5:2

2 And kept back part of the price, his wife also being privy to it, and brought a certain part, and laid it at the apostles feet.

When they had vowed the whole to God and his service, which made it a robbing of God; whatsoever pretence they might possibly have, of detaining some part for their own necessities in old age, or time of sickness; arguing a great distrust in that God, whom, when they had made their vow, they pretended to give themselves and their substance unto.

Her subjection to her husband, not excusing her partaking in his sin and punishment.

Their ambition carried them thus far; they would seem devout, charitable, &c. and their covetousness hindred them from going further,

vid. Chap. 4.35.