Today's Reading 1 at Mass came from 1 John 4. The last two and a half verses are beautifully true:
God is love, and whoever remains in love remains in God and God in him. In this is love brought to perfection among us, that we have confidence on the day of judgment because as he is, so are we in this world. There is no fear in love, but perfect love drives out fear because fear has to do with punishment, and so one who fears is not perfect in love.
Attain union with God and experience everything St. John has said here.