Crescite vero in Gratia
(The second epistle of Saint Peter, 3,18 (the final verse).

Latin words

Crescite vero in gratia,
et in cognitione Domini nostri,
et Salvatoris Iesu Christi.
Ipsi gloria
et nunc, et in diem aeternitatis.
Amen.

English translation.

Grow [truly] in grace,
and in the knowledge of our Lord
and Saviour Jesus Christ.
To him be glory
both now and for ever.
Amen.