Methodology: simple google searches, restrict results to direct quotes that are clear and straightforward and from the old testament (since the OP asks for Abrahamic books, not sure which he means but certainly not new testament).
"O Sovereign Lord! You have made the heavens and earth by Your great
power. Nothing is too hard for You!" (Jeremiah 32:17).
as cited by discover God: God is all powerful and
parallel translations from bible.cc
and from the Christianity SE site, in https://christianity.stackexchange.com/questions/2643/biblical-evidence-for-omnipotence-omniscience
the 1st answer cites Genesis 17:1-2
Genesis 17:1 (ESV) 1 When Abram was ninety-nine years old the LORD
appeared to Abram and said to him, "I am God Almighty; walk before me,
and be blameless,
Parallel versions of Genesis 17:1
As the OP of the Christianity SE question noted, here in Genesis GOD itself is making the claim that "I am God Almighty" rather than it simply being a record of praise from one of his believers, who might be offering mistaken praise. [Note: this was all still written down by believers, obviously...]
Hearken unto this, O Job: stand still, and consider the wondrous works
of God. Dost thou know when God disposed them, and caused the light of
his cloud to shine? Dost thou know the balancings of the clouds, the
wondrous works of Him which is perfect in knowledge ... (Job 37:14-18)
Parallel versions of Job 37:16 from bible.cc
Also a claim is made that God sees what everyone is doing:
Psalm 33:13,14 states, "The Lord looketh from heaven; he beholdeth all
the sons of men. From the place of his habitation he looketh upon all
the inhabitants of the earth."
Psalm 33:14 parallel versions from bible.cc
Both of these cites were from
The Omniscience of God: Old Testament teaching
A google search for "omnibenevolent god old testament" does not yield any positive claims among the first page of article titles.
However, a search for "God is good to all" quickly yielded:
New International Version (©1984) The LORD is good to all; he has
compassion on all he has made.
and that seems a pretty clear statement of Omnibenevolence.
For counterexamples to omnibenevolence a simple google search is all that is required.