What Does "THIS IS IT" Mean...Here Is The Message

9 But you are a chosen people, a royal priesthood, a holy nation, God’s special possession, that you may declare the praises of him who called you out of darkness into his wonderful light. 10 Once you were not a people, but now you are the people of God; once you had not received mercy, but now you have received mercy.

Open for me the gates of the righteous;
    I will enter and give thanks to the Lord.
20 This is the gate of the Lord
    through which the righteous may enter.
21 I will give you thanks, for you answered me;
    you have become my salvation.