Passage
But by the grace of God, I am that I am: and his grace which is in me, was not in vaine: but I laboured more aboundantly then they all: yet not I, but the grace of God which is with me.
But by the grace of God, I am that I am: and his grace which is in me, was not in vaine: but I laboured more aboundantly then they all: yet not I, but the grace of God which is with me.
1 Corinthians 15:8 And last of all he was seene also of me, as of one borne out of due time.
1 Corinthians 15:9 For I am the least of the Apostles, which am not meete to be called an Apostle, because I persecuted the Church of God.
1 Corinthians 15:10 But by the grace of God, I am that I am: and his grace which is in me, was not in vaine: but I laboured more aboundantly then they all: yet not I, but the grace of God which is with me.
1 Corinthians 15:11 Wherefore, whether it were I, or they, so we preach, and so haue ye beleeued.
1 Corinthians 15:12 Now if it be preached, that Christ is risen from the dead, how say some among you, that there is no resurrection of the dead?
The verse centers on "grace", "vaine", "laboured", and "aboundantly". It is saying that salvation is received as God's gift through faith, so boasting is pushed out by the wording itself.
The nearby context moves from verse 9's "For I am the least of the..." into verse 11's "Wherefore whether it were I or they...", so "grace" and "vaine" belong inside that flow. In 1 Corinthians context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "grace" and "vaine" with trust shaped by these words, not by a vague optimism outside the passage.