True faith is an expression of submission and obedience.
When a person believes on Jesus Christ, he believes on the Lord Jesus Christ. That’s who Jesus is. A believer receives a Lord who saves and a Savior who lords. The person who expresses faith in this way may never understand all that involves. They simply know they are lost, they realize they need salvation, they cry out for mercy and they put their trust in a Lord who saves, with the emphasis (in their minds) on being saved.
However, once they have come to him, they realize they have come to one who not only saves but also rules. He is Lord.