1Pe 2:5 ... acceptable to God through Jesus Christ ...
Although this refers to the offerings a Christian offers to God; that his offerings are acceptable to God through Jesus Christ, what we have here can also be applied to the salvation of a sinner.
There is only one means by which a sinner can be acceptable to God. It is "through Jesus Christ."
He is the only door, the only way and the only bridge that one must go through in order to be accepted by God. After all, He is the only One who died for our sins and was raised again from the dead by God.
And you can go through Him by trusting in Him and what He did on the cross alone for salvation.