Jud 1:20 But you, beloved, build yourselves up [founded] on your most holy faith [make progress, rise like an edifice higher and higher], praying in the Holy Spirit; 

There are many scriptures in God’s Word that teach us about having faith and keeping the faith, but one of my favorites is this scripture that we find in Jud 1:20.

He tells us that we are His beloved; and that we should build ourselves up in the holy faith to which your believes are founded upon.  Then He continues to teach us to progress… in other words move forward.  Never stop believing.  Never stop growing in your faith…. don’t quit… persevere and endure!

Also that you should rise like and edifice higher and higher in the spirit and while you do that, stay in faith by praying to the Holy Spirit language of God, which He has blessed you with.