Is there a Bible verse which says faith comes through the family apart from the word of Christ?
Christ is the Word, and it is His Spirit that dwells within each of us.
So there is no such thing as "family apart from the Word ". He is in Us and we are in Him.
Let us hold unswervingly to the hope we profess, for he who promised is faithful. And let us consider how we may spur one another on toward love and good deeds, not giving up meeting together, as some are in the habit of doing, but encouraging one another—and all the more as you see the Day approaching. Hebrews 10
Just as a body, though one, has many parts, but all its many parts form one body, so it is with Christ. For we were all baptized by
c one Spirit so as to form one body—whether Jews or Gentiles, slave or free—and we were all given the one Spirit to drink. Even so the body is not made up of one part but of many....Now you are the body of Christ, and each one of you is a part of it. And God has placed in the church first of all apostles, second prophets, third teachers, then miracles, then gifts of healing, of helping, of guidance, and of different kinds of tongues. Are all apostles? Are all prophets? Are all teachers? Do all work miracles? Do all have gifts of healing? Do all speak in tongues? Do all interpret? 1 Corinthians 12
But since we belong to the day, let us be sober, putting on faith and love as a breastplate, and the hope of salvation as a helmet. For God did not appoint us to suffer wrath but to receive salvation through our Lord Jesus Christ. He died for us so that, whether we are awake or asleep, we may live together with him. Therefore encourage one another and build each other up, just as in fact you are doing. 1 Thessalonians 5
Whose faithfulness? Bible verse?
The faithfullness of whoever you are in relationship with. This is a basic principle of any healthy relationship.
In the case of Yeshua, as we encounter His faithfulness, whether through what He has done for others or what He has done for us this should cause us to trust Him today with even more than we did yesterday.
Of course if that relationship damaged, so is the trust.
So you mean faith grows as we grow in knowledge of Him?
Yes, because He is faithfull. But Christianese aside it is a simple matter of relationship of one person with another.