It is not a condition, but an included result of trusting in Jesus (Ephesians 1:12). God's word guarantees His word "shall" (Isaiah 55:11) do all which God means, and confessing is one thing His word has us doing > not in order to keep salvation but because we are now with Jesus who has us doing all God's word the way God means . . . more and more as Jesus the Word of God keeps growing in us as our new inner Person > Galatians 4:19.
Also, God has us confessing to one another, plus ministering His healing to one another >
"Confess your trespasses to one another, and pray for one another, that you may be healed. The effective, fervent prayer of a righteous man avails much." (James 5:16)
Our mutual confessing and mutual healing prayer helps to get us "healed" of what in our nature makes us able to sin and then suffer because of the weakness of our nature. And we become "healed" more and more together with God, instead, in His love. We, then, also become "healed" more into oneness with one another, with God as our connection in the body of Jesus.
"But he who is joined to the Lord is one spirit with Him." (1 Corinthians 6:17)
I personally understand, Jason, that this union is almighty and God wins out in our union, to change us to become more and more how He is. Plus, this is God's word guaranteed to succeed in all He means > Isaiah 55:11.
So, if we have trusted in Jesus, all God's word means is guaranteed; we are not only given a ticket guaranteeing Heaven after we die, but now we are gaining all His word commands in us and our life with God and one another. Therefore, confessing and other things are not conditions . . . really . . . but guaranteed inclusions, I think
And in case a person is not getting the correction which brings this perfection in God's love (1 John 4:17), Hebrews 12:8 to me means the person is not a child of God, never has been saved, since a child of God does get this correction . . . how God is able to succeed, not merely what we can will ourselves to do >
"for it is God who works in you both to will and to do for His good pleasure." (Philippians 2:13)
But, yes, I still might have times when it is not obvious I am doing well in this. So, I trust You, God, to know who and how I really am, and to do what You please. You are the Good Judge to know what to do with every one of us.