Praise God for that my brother, However the cross is not just for salvation. In fact the cross is everything. The slippery sliding slope is self righteousness and we can do it with realizing it. We are set apart (sanctification) by the cross. Every blessing we receive is by the cross. To say I do this and I did that nullifies the cross and the Father will not accept it. It is not by power, nor by might, but by My Spirit saith the Lord. If you do it He will not accept it. The Lord your God is a jealous God. It must be by Him and not you.
I know you know this, but it is not the cross as the cross has no power. It is what the Lord did on the cross, for if it wasn't for Him dying on the cross for our sins that cross would be no different then any other cross used for crucifixion. It is what He did on it, and not it itself.
And saying I does not nullify the crucifixion, as Apostle Paul even used 1st person terms.
" I can do all things through Christ who strengthens me. "
Lord Jesus gets the credit for what we can do, because He makes the changes in our lives that shows in our outer actions, deeds, speech, and works.......