Deuteronomy 15:5

5 if only you diligently listen to the voice of the LORD your God, to observe to do all this mitzvah which I command you this 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 a foreigner you may exact it: but whatever of your is with your brother your hand shall release.
4 However there shall be no poor with you; (for the LORD will surely bless you in the land which the LORD your God gives you for an inheritance to possess it;)
5 if only you diligently listen to the voice of the LORD your God, to observe to do all this mitzvah which I command you this day.
6 For the LORD your God will bless you, as he promised you: and you shall lend to many nations, but you shall not borrow; and you shall rule over many nations, but they shall not rule over you.
7 If there be with you a poor man, one of your brothers, within any of your gates in your land which the LORD your God gives you, you shall not harden your heart, nor shut your hand from your poor brother;
The Hebrew Names Version is in the public domain.