Weakness, or being a weakling (mentally, physically or spiritually), is not the character of the Righteous. Thesaurus.net cites the following as synonyms of weakling:

…anemic, baby, body, canary, character, chicken, core, cowardly, craven, creature, dainty, decrepit, delicate, dim, doormat, dud, essence, faint, fainthearted, faintly, feeble, flaccid, flagging, flat, flimsy, fool, fragile, frail, gelding, ghost, heart, impotent, incapable, incompetent, infant, infirm, invalid, invertebrate, juice, languid, lazy, lean, life, light, limp, little, loser, man, mark, milquetoast, mind, misfit, mouse, narrow, nonentity, pansy, party, patsy, personality, powerless, puny, rickety, sap, shilly-shally, slender, slight, slim, sneak, soft, sotto voce, soul, spineless, spiritless, thin, turkey, unmanly, vulnerable, watery, weak, weak-kneed, weakly, weed, wet, youth, deserter, recreant, ectomorphic, crybaby, funk, sad sack, cad, fathead, caitiff, twirp, pushover, cream puff, schlemiel, shlemiel, sissy, mollycoddle, nerveless, dastard, poltroon, wimp, effete, floppy, sop, drip, self, eunuch, flabby, wimpish, wimpy, waverer, personage, lightweight, jellyfish, mama’s boy, milksop, pantywaist, mugwump, namby-pamby, wishy-washy, person, personification, shaky, scapegoat, shrinking violet, softie, softy, twerp, welcome mat, coward, Milk-livered, limp-wristed, milk-and-water, schnook, big baby, blank cartridge, castrato, faintish, fence-sitter, fraidy-cat, ladyfinger, mummy’s boy, nancy, nebbish, scaredy-cat, softling, white feather, wobbler, white liver, sissy orcissy, funker, schlemihl, dull tool, fraid-cat, gutless wonder, meek soul, weak sister, chinless wonder, cry-baby, Lord Fauntleroy, weak tool .”

None of these are intended to be adjectives for Christians. As in 2 Timothy 1:7 “For God hath not given us the spirit of fear, but of power, and of love, and of a sound mind.” Weakness is not your character. You can do nothing without Him, but with Him you are powerful.