Passage
because it is written, Ye shall be holy; for I am holy.
because it is written, Ye shall be holy; for I am holy.
1 Peter 1:14 as children of obedience, not fashioning yourselves according to your former lusts in [the time of] your ignorance:
1 Peter 1:15 but like as he who called you is holy, be ye yourselves also holy in all manner of living;
1 Peter 1:16 because it is written, Ye shall be holy; for I am holy.
1 Peter 1:17 And if ye call on him as Father, who without respect of persons judgeth according to each man`s work, pass the time of your sojourning in fear:
1 Peter 1:18 knowing that ye were redeemed, not with corruptible things, with silver or gold, from your vain manner of life handed down from your fathers;
The verse centers on "written", "shall", and "holy". It is saying that the verse draws attention to "written" and "shall", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 15's "but like as he who called you..." into verse 17's "And if ye call on him as...", so "written" and "shall" 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 "written" and "shall" with trust shaped by these words, not by a vague optimism outside the passage.