When the lord jesus christ ascended into heaven it doesn't mean that there is no true God in this world because more of the power of the lord jesus christ is dispersed all throughout the earth,when he ascended into heaven.john 12 verse 30 says,Jesus answered and said,this voice came not because of me,but for your sakes.
John 12 verse 32 says,if I be lift up from the earth,I will draw all men unto Me.
When the lord jesus christ was here on earth,he was in the holy land,within the boundaries of the Holy land,preaching and teaching the people of God in the holy land.
Jesus said I will lift them unto me because,if you are above,then your power extends to more people than when you are on earth. The lord jesus christ was lifted unto heaven before he was lifted,after he resurrected from the dead, here is the pronouncement of the lord jesus christ.
1 John chapter 5 verse 20 says,
And we know that the son of God is come,and hath given us an understanding,that we may know him that is true,and we are in him that is true,Even is son jesus christ. This is the true God,and eternal life.
The lord jesus christ was already in heaven when John wrote this epistle.. we know that the word of God is" come" the come there is in the perfect sentence already.
We see the true word of God through the lord jesus christ.