He answered, “‘Love the Lord your God with all your heart and with all your soul and with all your strength and with all your mind’; and, ‘Love your neighbor as yourself.’”

Luke 10:27 ESV

A little language note: love the Lord with your soul actually encompasses your body; it’s your whole person. The word translated strength means something like “muchness,” so love God with all you have!

You shall restore to him the pledge as the sun sets, that he may sleep in his cloak and bless you. And it shall be righteousness for you before the Lord your God.

Deuteronomy 24:13 ESV

The Good Samaritan story is like this, loving the one in need who can’t pay you back. He blesses and it is credited to the giver as righteousness. The opposite is true as well. If you are stingy to the one in need (within what is right for him to ask of you), then his curse is credited as your sin.

You shall give him his wages on the same day, before the sun sets (for he is poor and counts on it), lest he cry against you to the Lord, and you be guilty of sin.

Deuteronomy 24:15 ESV