The third year tithe, providing for widows and orphans

YHVH wants total devotion and obedience from us, but most of all, a relationship. He also requires loving kindness from us. He wants us to love one another, and to take care of the Levite, the stranger, the widow and the orphan. In other words, He wants us to take care of anybody in need. What does He teach us about this in His Word and how are we to apply this in our lives? Do you know how important this is to YHVH?