Passage
but according as He who did call you <FI>is<Fi> holy, ye also, become holy in all behaviour,
but according as He who did call you <FI>is<Fi> holy, ye also, become holy in all behaviour,
1 Peter 1:13 Wherefore having girded up the loins of your mind, being sober, hope perfectly upon the grace that is being brought to you in the revelation of Jesus Christ,
1 Peter 1:14 as obedient children, not fashioning yourselves to the former desires in your ignorance,
1 Peter 1:15 but according as He who did call you <FI>is<Fi> holy, ye also, become holy in all behaviour,
1 Peter 1:16 because it hath been written, `Become ye holy, because I am holy;'
1 Peter 1:17 and if on the Father ye do call, who without acceptance of persons is judging according to the work of each, in fear the time of your sojourn pass ye,
The verse centers on "call", "holy", "become", and "behaviour". It is saying that the verse draws attention to "call" and "holy", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 14's "as obedient children not fashioning yourselves to..." into verse 16's "because it hath been written Become ye...", so "call" and "holy" belong inside that flow. In 1 Peter context, the local focus is hope in suffering, holy conduct, submission, and grace.
A plain takeaway is to answer the verse's own emphasis on "call" and "holy" with trust shaped by these words, not by a vague optimism outside the passage.