Oddity at Mass

Have you ever been at Mass and heard

Through him, with him,
in him, in the unity of the
Holy Spirit, all glory and
honour is yours, almighty
Father, for ever and ever.

replaced with

For it is through him, with him,
in him, in the unity of the
Holy Spirit, all glory and
honour is yours, almighty
Father, for ever and ever.

Looking at it, isn't that an improper sentence? Shouldn't it read

For it is through him, with him,
in him, in the unity of the
Holy Spirit, THAT all glory and
honour is yours, almighty
Father, for ever and ever.

Better just stick with the approved text.