2 Timothy 3:14
But you must cling to the things which you have learnt and have been taught to believe, knowing who your teachers were,
2 Timothy 1:13
Provide yourself with an outline of the sound teaching which you have heard from my lips, and be true to the faith and love which are in Christ Jesus.
Acts 17:31
seeing that He has appointed a day on which, before long, He will judge the world in righteousness, through the instrumentality of a man whom He has pre-destined to this work, and has made the fact certain to every one by raising Him from the dead."
Romans 14:5
One man esteems one day more highly than another; another esteems all days alike. Let every one be thoroughly convinced in his own mind.
Colossians 2:2
in order that their hearts may be cheered, they themselves being welded together in love and enjoying all the advantages of a reasonable certainty, till at last they attain the full knowledge of God's truth, which is Christ Himself.
1 Thessalonians 1:5
The Good News that we brought you did not come to you in words only, but also with power and with the Holy Spirit and with much certainty, for you know the sort of men we became among you, as examples for your sakes.
1 Thessalonians 2:13
And for this further reason we render unceasing thanks to God, that when you received God's Message from our lips, it was as no mere message from men that you embraced it, but as--what it really is--God's Message, which also does its work in the hearts of you who believe.
1 Timothy 4:16
Be on your guard as to yourself and your teaching. Persevere in these things; for by doing this you will make certain your own salvation and that of your hearers.
2 Timothy 2:2
All that you have been taught by me in the hearing of many witnesses, you must hand on to trusty men who shall themselves, in turn, be competent to instruct others also.
2 Timothy 3:15
and that from infancy you have known the sacred writings which are able to make you wise to obtain salvation through faith in Christ Jesus.
Hebrews 6:11
But we long for each of you to continue to manifest the same earnestness, with a view to your enjoying fulness of hope to the very End;
Hebrews 10:22
let us draw near with sincerity and unfaltering faith, having had our hearts sprinkled, once for all, from consciences oppressed with sin, and our bodies bathed in pure water.