'Confessing' in the Bible

please let Your ear be attentive and Your eyes open to hear the prayer of Your servant which I am praying before You, day and night, on behalf of Your servants, the sons (descendants) of Israel (Jacob), confessing the sins of the sons of Israel which we have committed against You; I and my father’s house have sinned.

For it will be pleasant if you keep them in mind [incorporating them as guiding principles];Let them be ready on your lips [to guide and strengthen yourself and others].

While I was still speaking and praying, and confessing my sin and the sin of my people Israel, and presenting my supplication before the Lord my God in behalf of the holy mountain of my God,

and they were being baptized by him in the Jordan River, as they confessed their sins.

And all the country of Judea and all the people of Jerusalem were continually going out to him; and they were being baptized by him in the Jordan River, as they confessed their sins.

All these died in faith [guided and sustained by it], without receiving the [tangible fulfillment of God’s] promises, only having seen (anticipated) them and having welcomed them from a distance, and having acknowledged that they were strangers and exiles on the earth.

I am writing to you, little children (believers, dear ones), because your sins have been forgiven for His name’s sake [you have been pardoned and released from spiritual debt through His name because you have confessed His name, believing in Him as Savior].