אִם־תְּדַבֵּ֣רְנָה שְׂפָתַ֣י עַוְלָ֑ה וּ֝לְשׁוֹנִ֗י אִם־יֶהְגֶּ֥ה רְמִיָּֽה׃
Surely my lips shall not speak unrighteousness, Neither shall my tongue utter deceit;
Read kabbalistic (mystical) interpretation of Job 27:4: and classical mystical sources.