en_tn_condensed/2ti/02/11.md

This is a trustworthy saying

"These are words you can trust"

If we have died with him, we will also live with him

This is most likely the beginning of a song or poem that Paul is quoting. If your language has a way of indicating that this is poetry, you could use it here. If not, you could translate this as regular prose rather than poetry.

died with him

Paul uses this expression to mean that people share in Christ's death when they trust in him, deny their own wants, and obey him.