Jesus said, “Ask and it will be given to you, seek and you will find; knock and the door will be opened to you. For everyone who asks, receives;he who seeks, finds; and to him who knocks, the door will be opened.” Matthew 7:7

Also

Because you are His Sons, God sent the Spirit of His Son into our hearts, the Spirit who calls out, “Abba, Father. So you are no longer a slave, but a son. And since you are a son, God has also made you an heir.” Galatians 4:6-7