30 verses in Scripture that include diatheke (Strong's #1242):
Matt 26:28
Mark 14:24
Luke 1:72 (referencing the Sinai covenant)
Luke 22:20
Acts 3:25 (referencing the Abrahamic covenant)
Acts 7:8 (referencing the Abrahamic covenant)
Rom 9:4 (referencing the Abrahamic and Sinai covenants)
Rom 11:27
1 Cor 11:25
2 Cor 3:6
2 Cor 3:14 (referencing the covenant at Sinai)
Gal 3:15
Gal 3:17 (referencing the Abrahamic covenant)
Gal 4:24
Eph 2:12 (referencing the Abrahamic covenant)
Heb 7:22
Heb 8:6, 8, 9, 10
Heb 9:4, 15, 16, 17
Heb 9:20 (referencing the Abrahamic covenant)
Heb 10:16, 29
Heb 12:24
Heb 13:20
Rev 11:19 (referencing the Sinai covenant)