How to know if we are loving others

 Whoever believes that Jesus is the Christ is born of God, and everyone who loves Him who begot also loves him who is begotten of Him. By this we know that we love the children of God, when we love God and keep His commandments.   ( 1 John 5:1-2 )

Unfailing Love of GOD

But I trust in your unfailing love;
    my heart rejoices in your salvation.

                                     ( Pslams 13.5 )

faithfulness of the LORD endures forever

For great is his love toward us,
   and the faithfulness of the LORD endures forever.
   Praise the LORD.

                   ( Psalms 117.2 )