en_tn_lite_do_not_use/2co/11/14.md

this is no surprise ... It is no great surprise if

By stating this in a negative form Paul is emphasizing that the Corinthians should expect to meet many "false apostles" (2 Corinthians 11:13). AT: "we should expect this ... We should certainly expect that" (See: rc://en/ta/man/translate/figs-litotes)

Satan disguises himself as an angel of light

"Satan is not an angel of light, but he tries to make himself look like an angel of light"

his servants also disguise themselves as servants of righteousness

"his servants are not servants of righteousness, but they try to make themselves look like servants of righteousness"