Matthew 5:9

7 Blessed are the merciful, for they will be shown mercy.

8 Blessed are the pure in heart, for they will see God.

Blessed are the peacemakers, for they will be called sons of God.

10 Blessed are those who are persecuted because of righteousness, for theirs is the kingdom of heaven.

11 Blessed are you when people insult you, persecute you, and falsely say all kinds of evil against you because of Me.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
Blessed are the peacemakers, for they will be called sons of God.
KJV
Blessed are the peacemakers: for they shall be called the children of God.
WEB
Blessed are the peacemakers, for they shall be called children of God.
ASV
Blessed are the peacemakers: for they shall be called sons of God.
DARBY
Blessed the peace-makers, for *they* shall be called sons of God.
BLB
Blessed [are] the peacemakers, because they will be called sons of God.
ÅB
«Salige er de som skaper fred;
for de skal kalles Guds barn.
OTB
Salige er de som skaper fred,
for de skal kalles Guds barn.
B1930
Salige er de fredsommelige; for de skal kalles Guds barn.

Study notes (Tyndale)

Original text and word study

Cross references