We are not receiving eternal life by our performance. Our reception of eternal life shows the quality of our performance. Christ qualified eternal life by experiencing oneness with creation in expressing Himself. When we pray and meditate on these expressions our souls are enlarged.We are breathing out positive or negative human expressions. We receive the nature of Christ love , joy, peace. etc in mirroring His human expression. When we speak the Psalms we are experiencing the weight of Christ expression.The bible calls this the weight of glory. This is why these expressions enlarge our souls. We are being loved beyond our understanding of  of love. God teaches us His love through this human expression of love.