Jesus said: Not everyone who says to Me, Lord, Lord, will enter the kingdom of heaven, but [only] he who does the will of My Father Who is in heaven. Many will say to Me in that day, ‘Lord, Lord, have we not prophesied in Your name, cast out demons in Your name, and done many wonders in Your name? And then I will declare to them, ‘I never knew you; depart from Me, you who practice lawlessness!’ Mat 7:21-23. Obviously they called him Lord, and they had enough faith that he was the son of God to perform wonderful miracles in his name; but that was not enough - they practiced lawlessness, thinking there was no need to obey him! Jesus is saying that they have not made them their Lord in practice, who controls their lives in their actions and words; he doesn't know them to be his subjects as their ruling Lord. They say Jesus is Lord with their lips, but keep him far removed from their hearts to really be their Lord and King.
Jesus said: Not everyone who calls me Lord will enter heaven, but only those who do the will of my Father.
And how do you do the will of the Father? Then there came a voice out of the cloud, saying,
"This is My Son, My Chosen One or My Beloved; listen to and yield to and obey Him!” Luk 9:35
You must go to him, listen to him, hear him, and obey him - repeatedly.
Doing this will result in him cleansing you, making you fit to be in his presence, making him your ruling Lord in words and actions.
He [Jesus] became the Author and Source of eternal salvation to all those who give heed and obey Him. Heb 5:9
To make him Lord, he has to first cleanse us of our sinful nature that makes us unruly, incapable of being subject to a Lord or King. Until he cleanses us, we are a slave to sin, incapable of being subject to a Lord or King. Jesus himself said, everyone who sins is a slave to sin. John 8:34. So we have to seek him to purify us by destroying our selfish, unruly, sinful nature; we have to sit quietly so that he, the Light and the Word, can teach us about himself and search our heart to show us our conditions; lead us to repent, and then cleanse us to be governable so he can truly rule us as our King and Lord. My sheep hear My voice, and I know them, and they follow Me; all who are of the truth hear my voice. John 10:27, 18:37.