You can show your love to others by not wishing that they should be better Christians.
Francis of AssisiO divine Master, grant that I may not so much seek to be consoled as to console; to be understood as to understand; to be loved as to love. For it is in giving that we receive; it is in pardoning that we are pardoned; and it is in dying that we are born to eternal life.
Francis of AssisiHold back nothing of yourselves for yourselves so that He who gives Himself totally to you may receive you totally.
Francis of Assisi