(5) Only if thou carefully hearken.--"Then there will be none among thee in want." So Rashi expounds, in the very spirit of the passage in Acts 4.

Verses 5, 6. - This blessing, though promised and certified, should come only if they were careful to observe and do all that God commanded them. The for at the beginning of ver. 6 connects this with ver. 4. Thou shalt lend. The verb in Kal signifies to borrow on a pledge; in Hiph. to lend on a pledge, as here; it is a denominative from the Hebrew noun signifying pledge.

15:1-11 This year of release typified the grace of the gospel, in which is proclaimed the acceptable year of the Lord; and by which we obtain the release of our debts, that is, the pardon of our sins. The law is spiritual, and lays restraints upon the thoughts of the heart. We mistake, if we think thoughts are free from God's knowledge and check. That is a wicked heart indeed, which raises evil thoughts from the good law of God, as theirs did, who, because God had obliged them to the charity of forgiving, denied the charity of giving. Those who would keep from the act of sin, must keep out of their minds the very thought of sin. It is a dreadful thing to have the cry of the poor justly against us. Grudge not a kindness to thy brother; distrust not the providence of God. What thou doest, do freely, for God loves a cheerful giver, 2Co 9:7.In his word, and by his prophets; this being the case, there would be no more poor among them, or however they would be so blessed of God, that they would be capable of releasing the debts of the poor, without hurting themselves and their families:

to observe to do all these commandments which I command thee this day; a phrase often used to put them in mind of the commands of God, and the necessity of keeping them, their temporal happiness depending thereon.