The first 2 verses drive home the fact that God answers us from any stage of our lives. Plead with Him for His ear. Knowing that if our bond with God is not strong enough we cannot hear Him answer us either. Choose the Glory of the Lord over our selfish quibbles with earthly power. Knowing the agency we need comes from Him and His gift of salvation.
Wait for the Lord and wait on the Lord. If we wait FOR Him, He will tell us what we need to hear when we are ready to receive it. We must also wait ON the Lord for the service he requires is without refute. He provides mercy and righteousness to those who do the things He asks of us. Remain present in Him and give Him your spirit to shake the direction he desires for us. Be redeemed by His Grace and saved by his Mercy. Put our Faith in the Cross and receive the blessing of salvation.