Errar es humano; perdonar, divino.

Nueva frase/New phrase:

*Errar es humano; perdonar, divino. / To err is human, to forgive divine._________________________________
*(El) Errar es humano (y) (el) perdonar (es) divino.
It's not necessary the articles; and the "semicolon(;)" replaces the conjunction "y", while the "comma(,)" replaces the verb "ser" in the second proposition.