The three pillars or foundations of the Church (the righteous people, not a building) are Repentance, Faith and Holiness.
These three produce Fruit. They produce Miracles. They produce Love, and Joy, and Power. They lead to a good and strong Relationship with the Holy Creator, the Most High.
Therefore, having these promises, beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God. 2 Corinthians 7:1
and that you put on the new man which was created according to God, in true righteousness and holiness. Ephesians 4:24
REPENTANCE
For godly sorrow produces repentance leading to salvation, not to be regretted; but the sorrow of the world produces death. 2 Corinthians 7:10
Therefore bear fruits worthy of repentance, Matthew 3:8
I did not come to call the righteous, but sinners, to repentance.” Mark 2:17
I say to you that likewise there will be more joy in heaven over one sinner who repents than over ninety-nine just persons who need no repentance. Luke 15:7
and that repentance and remission of sins should be preached in His name to all nations, beginning at Jerusalem. Luke 24:47
Or do you despise the riches of His goodness, forbearance, and longsuffering, not knowing that the goodness of God leads you to repentance? Romans 2:4
The Lord is not slack concerning His promise, as some count slackness, but is longsuffering toward us, not willing that any should perish but that all should come to repentance. 2 Peter 3:9
HOLINESS
For God did not call us to uncleanness, but in holiness. 1 Thessalonians 4:7
Pursue peace with all people, and holiness, without which no one will see the Lord: Hebrews 12:14
FAITH
Now faith is the substance of things hoped for, the evidence of things not seen. Hebrews 11
But He said to them, “Why are you fearful, O you of little faith? Matthew 8:26
When Jesus saw their faith, He said to the paralytic, “Son, your sins are forgiven you.” Mark 2:5
Then He said to the woman, “Your faith has saved you. Go in peace.” Luke 7:50
But He said to them, “Where is your faith?” And they were afraid, and marveled, saying to one another, “Who can this be? For He commands even the winds and water, and they obey Him!” Luke 8:25
He who is faithful in what is least is faithful also in much; and he who is unjust in what is least is unjust also in much. Luke 16:10
So the Lord said, “If you have faith as a mustard seed, you can say to this mulberry tree, ‘Be pulled up by the roots and be planted in the sea,’ and it would obey you. Luke 17:6
And He said to him, “Arise, go your way. Your faith has made you well.” Luke 17:19
Then Jesus said to him, “Receive your sight; your faith has made you well.” Luke 18:42
But without faith it is impossible to please Him, for he who comes to God must believe that He is, and that He is a rewarder of those who diligently seek Him. Hebrews 11:6