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Life in Christ

591

A

rticle

8

THE EIGHTH COMMANDMENT

You shall not bear false witness against your neighbor.

253

It was said to the men of old, “You shall not swear falsely,

but shall perform to the Lord what you have sworn.”

254

2464

The eighth commandment forbids misrepresenting the

truth in our relations with others. This moral prescription flows

from the vocation of the holy people to bear witness to their God

who is the truth and wills the truth. Offenses against the truth

express by word or deed a refusal to commit oneself to moral up­

rightness: they are fundamental infidelities to God and, in this

sense, they undermine the foundations of the covenant.

I.

L

iving

in

the

T

ruth

2465

The Old Testament attests that

God is the source of all truth.

His Word is truth. His Law is truth. His “faithfulness endures to

all generations.”

255

Since God is “true,” the members of his people

are called to live in the truth.

256

2466

In Jesus Christ, the whole of God’s truth has been made

manifest. “Full of grace and truth,” he came as the “light of the

world,” he

is the Truth.

257

“Whoever believes in me may not remain

in darkness.”

258

The disciple of Jesus continues in his word so as

to know “the truth [that] will make you free” and that sanctifies.

259

To follow Jesus is to live in “the Spirit of truth,” whom the Father

sends in his name and who leads “into all the truth.”

260

To his dis­

ciples Jesus teaches the unconditional love of truth: “Let what you

say be simply ‘Yes or No.’”

261

253

Ex

20:16; cf.

Deut

5:20.

254

Mt

5:33.

255

Ps

119:90; cf.

Prov

8:7;

2 Sam

7:28;

Ps

119:142;

Lk

1:50.

256

Rom

3:4; cf.

Ps

119:30.

257

Jn

1:14; 8:12; cf. 14:6.

258

Jn

12:46.

259

Jn

8:32; cf. 17:17.

260

Jn

16:13.

261

Mt

5:37.

215

2153