Often the best way to expose one’s motives involves asking and answering the question “Why?” This question may resurface at the judgment seat of Christ.
How would making your motive match the Lord's motive change how you approach the Christian life (from witnessing to praying to Bible reading and so on)?
The Bible always serves as the best source for adequately defining a Bible word. According to Joshua 7:19, confession is connected to the act of telling what a person has done—refusing to keep it hidden. Joshua told Achan to give “glory to the LORD God of Israel, and make confession unto him; and tell me now what thou hast done; hide it not from me.” Psalm 32:5 identifies confession as acknowledging a matter—refusing to hide it. Additionally, Proverbs 28:13 defines confession as the opposite of covering one's sin. In John 1:20, the word confessed appears twice with a defining phrase in between— “and denied not.” In the same manner, Acts 19:18 demonstrates that those who “confessed” “came . . . and shewed their deeds.” The scriptural evidence points to confession as the willingness to make known that which could otherwise be private, personal, or hidden. Keep in mind that regardless of one's willingness to confess, nothing can be hidden from the Lord.