First Love
Christ spoke many good things about the church at Ephesus; They labored in His work, were patient and hated evil, but he had something against them.
Revelation 2:4 Nevertheless, I have somewhat against thee because thou hast left thy first love.
Jesus told them to remember and repent and do their first works--their first love as it was when they got saved, when they fell in love with Him.
Love for God's people, the church, and His work grows out of love for The Lord.
If you feel you've left your first love, repent, then read the Bible and pray every day. Attend church faithfully, give out of love, and witness. Do it because you love The Lord.
Psalm 139:23,24 Search me, O God, and know my heart: try me and know my thoughts: And see if there be any wicked way in me and lead me in the way everlasting.