Deuteronomy 15:5

5 `Only, if thou dost diligently hearken to the voice of Jehovah thy God, to observe to do all this command which I am commanding thee to-day,

Deuteronomy 15:5 Meaning and Commentary

Ver. 5 Only if thou carefully hearken to the voice of the Lord thy God,
&c.] 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.

Deuteronomy 15:5 In-Context

3 of the stranger thou mayest exact, and that which is thine with thy brother doth thy hand release;

4 only when there is no needy one with thee, for Jehovah doth greatly bless thee in the land which Jehovah thy God is giving to thee -- an inheritance to possess it.

5 `Only, if thou dost diligently hearken to the voice of Jehovah thy God, to observe to do all this command which I am commanding thee to-day,

6 for Jehovah thy God hath blessed thee as He hath spoken to thee; and thou hast lent [to] many nations, and thou hast not borrowed; and thou hast ruled over many nations, and over thee they do not rule.

7 `When there is with thee any needy one of one of thy brethren, in one of thy cities, in thy land which Jehovah thy God is giving to thee, thou dost not harden thy heart, nor shut thy hand from thy needy brother;