Think, my soul, the bitter hour of death and the Last Judgment of your Creator and God: For the threatening angels will understand you, my soul, and will lead you into the eternal fire; For before you die, repent, crying: Lord, have mercy on me, a sinner.
Ikos is a church chant that develops the theme of the kontakion (ikos always follows the kontakion and is not used independently), but is more extensive. Kontakion and Ikos, read from the 6th song of the canon, usually end with the same words. If they understand, they will catch you.