"Jesus will be Lord of all, or He won't be Lord at all!" I heard that over 40 years ago and it's still true. Jesus said, "No man can serve two masters..." Matthew 6:24.
I had a lovely Jewish woman, Rose, and her husband living in New York City and I would visit them almost every week. Her husband, Bernie, was a Holocaust Survivor - he had the tattoo number on his arm. Rose somehow escaped that horror, and she and Bernie were married after his release. They came to America and settled into an apartment on 8th Avenue, a short distance from the mission where I served, St. Paul's House.
I witnessed to both of them and one day Rose said she had "accepted Jesus Christ as her Savior" according to John 1:12. I was thrilled to hear that and hoped to see Bernie do the same. But after I came back a few more times Rose shared something that made me wonder about her sincerity. She said she "accepted Christ" as she had believed in almost any and every religion she could hear about! She wanted to be "safe" so she believed in everything and everybody hoping that in the pile of religions she would somehow have "caught" the right one. Sad!
Jesus isn't going to enter a heart that is still clinging unto "other gods!" He is the Yahweh of the Old Testament who said, "I am the Lord, that is My name; and My glory I will not give to another." Isaiah 42:8. He also said, "...Before Me there was no God formed, nor shall there be after Me. I, even I, am the Lord, and besides Me there is no savior." Isaiah 43:10,11. Now I firmly believe the Spirit of God can straighten out a person like Rose. But during the time I was visiting her she never changed her view even though she tried to say she would give Jesus a place of higher priority than the rest! I prayed for her for years never hearing about any change in her mind. I can only assume she passed away (it's been nearly 15 years since I saw her and she was in her 80's then). I leave it up to God to know the reality of her faith.
A warning for all of us, however. You may know Christ as your ONLY Savior and you are not trusting in anyone else. But, who has the Lordship over your life? Remember, you may not think you have any idols, but think about this. Is spending time with Jesus in prayer, study of His Word, and fellowship with His people more important to you than anything or anyone else? Do you gladly turn off your computer/TV; do you leave a game early; do you wake up sooner than usual; or, do you go to bed just a little later so you can have time to be quiet with your Lord? Who really has priority in your life? You may not be like Rose, with multiple saviors, but you're not much better off if Jesus doesn't have First Place in your life. You'll never know the Joy and Excitement of following Him if your heart has "divided loyalties." Remember, a "double-minded" man is unstable in all his ways!